The invention discloses an anti-aging light-conversion silver black mulching film and a preparation method thereof, and belongs to the technical field of agricultural
polymer films. The preparation method comprises the following steps: S1, mixing low-density
polyethylene powder,
aluminum paste, a complex light conversion agent, dioctyl
phthalate and EVA (
Ethylene Vinyl Acetate) to prepare silver light conversion master batches; s2, vinyl-terminated
fluorosilicone oil, tert-butyl peroxybenzoate and linear low-density
polyethylene powder are stirred for a reaction, and modified low-density
polyethylene is obtained; the modified low-density polyethylene,
maleic anhydride grafted polyethylene, a multi-
effect light stabilizer and
polyethylene wax are subjected to banburying
granulation, and modified light-stable master batches are obtained; s3, carrying out banburying
granulation on the low-density polyethylene
powder, the polyethylene powder,
carbon black,
zinc stearate,
ethylene bis-stearamide and the EVA powder to obtain black master batches; s4, blending the silver layer and the
black layer, and performing double-layer co-
extrusion to obtain the light-conversion silver-black mulching film. The light-conversion silver black mulching film provided by the invention has good mechanical properties and
aging resistance.